The American Civil Liberties Union has seen an "unprecedented" response in the wake of President Donald Trump's executive order on immigration, with donors giving more than $10 million since Saturday, the group's leader said.

The ACLU often provides legal help in cases it views as violations of civil and constitutional guarantees, and the nonprofit's membership ranks have grown by 150,000 people since Trump's directive, according to organizers.

"I've never seen anything like this," Anthony Romero, executive director of the ACLU, told Yahoo News. "People are fired up and want to be engaged. What we've seen is an unprecedented public reaction to the challenges of the Trump administration."

Trump's directive includes a 90-day travel ban on citizens of Iran, Iraq, Libya, Somalia, Sudan, Syria and Yemen, as well as a 120-day suspension of the U.S. refugee program. It also bars Syrian refugees indefinitely.

On Saturday, the nonprofit filed a lawsuit on behalf of two Iraqi men detained in New York under Trump's executive order. U.S. District Judge Ann Donnelly's ruled in favor of the men, and a temporary stay blocked part of the president's actions, preventing the government from deporting arrivals tangled in the presidential order. The two men were later released.

The ruling affects those who have arrived in the U.S with previously approved refugee applications or with valid visas.

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“Clearly, the judge understood the possibility for irreparable harm to hundreds of immigrants and lawful visitors to this country," Romero said in a prepared statement. "Our courts today worked as they should as bulwarks against government abuse or unconstitutional policies and orders.”

The emergency order by U.S. District Judge Ann Donnelly in New York did not, however, allow affected travelers into the United States or rule more broadly on the constitutionality of Trump's actions.

The Department of Homeland Security said Sunday that it would continue to enforce Trump's executive orders "in a manner that ensures the safety and security of the American people."